[mirror_ubuntu-jammy-kernel.git] / sound / soc / meson / meson-card-utils.c

// SPDX-License-Identifier: GPL-2.0
//
// Copyright (c) 2020 BayLibre, SAS.
// Author: Jerome Brunet <jbrunet@baylibre.com>

#include <linux/module.h>
#include <linux/of_platform.h>
#include <sound/soc.h>

#include "meson-card.h"

int meson_card_i2s_set_sysclk(struct snd_pcm_substream *substream,
			      struct snd_pcm_hw_params *params,
			      unsigned int mclk_fs)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai;
	unsigned int mclk;
	int ret, i;

	if (!mclk_fs)
		return 0;

	mclk = params_rate(params) * mclk_fs;

	for_each_rtd_codec_dais(rtd, i, codec_dai) {
		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
					     SND_SOC_CLOCK_IN);
		if (ret && ret != -ENOTSUPP)
			return ret;
	}

	ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), 0, mclk,
				     SND_SOC_CLOCK_OUT);
	if (ret && ret != -ENOTSUPP)
		return ret;

	return 0;
}
EXPORT_SYMBOL_GPL(meson_card_i2s_set_sysclk);

int meson_card_reallocate_links(struct snd_soc_card *card,
				unsigned int num_links)
{
	struct meson_card *priv = snd_soc_card_get_drvdata(card);
	struct snd_soc_dai_link *links;
	void **ldata;

	links = krealloc(priv->card.dai_link,
			 num_links * sizeof(*priv->card.dai_link),
			 GFP_KERNEL | __GFP_ZERO);
	if (!links)
		goto err_links;

	ldata = krealloc(priv->link_data,
			 num_links * sizeof(*priv->link_data),
			 GFP_KERNEL | __GFP_ZERO);
	if (!ldata)
		goto err_ldata;

	priv->card.dai_link = links;
	priv->link_data = ldata;
	priv->card.num_links = num_links;
	return 0;

err_ldata:
	kfree(links);
err_links:
	dev_err(priv->card.dev, "failed to allocate links\n");
	return -ENOMEM;

}
EXPORT_SYMBOL_GPL(meson_card_reallocate_links);

int meson_card_parse_dai(struct snd_soc_card *card,
			 struct device_node *node,
			 struct device_node **dai_of_node,
			 const char **dai_name)
{
	struct of_phandle_args args;
	int ret;

	if (!dai_name || !dai_of_node || !node)
		return -EINVAL;

	ret = of_parse_phandle_with_args(node, "sound-dai",
					 "#sound-dai-cells", 0, &args);
	if (ret) {
		if (ret != -EPROBE_DEFER)
			dev_err(card->dev, "can't parse dai %d\n", ret);
		return ret;
	}
	*dai_of_node = args.np;

	return snd_soc_get_dai_name(&args, dai_name);
}
EXPORT_SYMBOL_GPL(meson_card_parse_dai);

static int meson_card_set_link_name(struct snd_soc_card *card,
				    struct snd_soc_dai_link *link,
				    struct device_node *node,
				    const char *prefix)
{
	char *name = devm_kasprintf(card->dev, GFP_KERNEL, "%s.%s",
				    prefix, node->full_name);
	if (!name)
		return -ENOMEM;

	link->name = name;
	link->stream_name = name;

	return 0;
}

unsigned int meson_card_parse_daifmt(struct device_node *node,
				     struct device_node *cpu_node)
{
	struct device_node *bitclkmaster = NULL;
	struct device_node *framemaster = NULL;
	unsigned int daifmt;

	daifmt = snd_soc_of_parse_daifmt(node, DT_PREFIX,
					 &bitclkmaster, &framemaster);
	daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;

	/* If no master is provided, default to cpu master */
	if (!bitclkmaster || bitclkmaster == cpu_node) {
		daifmt |= (!framemaster || framemaster == cpu_node) ?
			SND_SOC_DAIFMT_CBS_CFS : SND_SOC_DAIFMT_CBS_CFM;
	} else {
		daifmt |= (!framemaster || framemaster == cpu_node) ?
			SND_SOC_DAIFMT_CBM_CFS : SND_SOC_DAIFMT_CBM_CFM;
	}

	of_node_put(bitclkmaster);
	of_node_put(framemaster);

	return daifmt;
}
EXPORT_SYMBOL_GPL(meson_card_parse_daifmt);

int meson_card_set_be_link(struct snd_soc_card *card,
			   struct snd_soc_dai_link *link,
			   struct device_node *node)
{
	struct snd_soc_dai_link_component *codec;
	struct device_node *np;
	int ret, num_codecs;

	link->no_pcm = 1;
	link->dpcm_playback = 1;
	link->dpcm_capture = 1;

	num_codecs = of_get_child_count(node);
	if (!num_codecs) {
		dev_err(card->dev, "be link %s has no codec\n",
			node->full_name);
		return -EINVAL;
	}

	codec = devm_kcalloc(card->dev, num_codecs, sizeof(*codec), GFP_KERNEL);
	if (!codec)
		return -ENOMEM;

	link->codecs = codec;
	link->num_codecs = num_codecs;

	for_each_child_of_node(node, np) {
		ret = meson_card_parse_dai(card, np, &codec->of_node,
					   &codec->dai_name);
		if (ret) {
			of_node_put(np);
			return ret;
		}

		codec++;
	}

	ret = meson_card_set_link_name(card, link, node, "be");
	if (ret)
		dev_err(card->dev, "error setting %pOFn link name\n", np);

	return ret;
}
EXPORT_SYMBOL_GPL(meson_card_set_be_link);

int meson_card_set_fe_link(struct snd_soc_card *card,
			   struct snd_soc_dai_link *link,
			   struct device_node *node,
			   bool is_playback)
{
	struct snd_soc_dai_link_component *codec;

	codec = devm_kzalloc(card->dev, sizeof(*codec), GFP_KERNEL);
	if (!codec)
		return -ENOMEM;

	link->codecs = codec;
	link->num_codecs = 1;

	link->dynamic = 1;
	link->dpcm_merged_format = 1;
	link->dpcm_merged_chan = 1;
	link->dpcm_merged_rate = 1;
	link->codecs->dai_name = "snd-soc-dummy-dai";
	link->codecs->name = "snd-soc-dummy";

	if (is_playback)
		link->dpcm_playback = 1;
	else
		link->dpcm_capture = 1;

	return meson_card_set_link_name(card, link, node, "fe");
}
EXPORT_SYMBOL_GPL(meson_card_set_fe_link);

static int meson_card_add_links(struct snd_soc_card *card)
{
	struct meson_card *priv = snd_soc_card_get_drvdata(card);
	struct device_node *node = card->dev->of_node;
	struct device_node *np;
	int num, i, ret;

	num = of_get_child_count(node);
	if (!num) {
		dev_err(card->dev, "card has no links\n");
		return -EINVAL;
	}

	ret = meson_card_reallocate_links(card, num);
	if (ret)
		return ret;

	i = 0;
	for_each_child_of_node(node, np) {
		ret = priv->match_data->add_link(card, np, &i);
		if (ret) {
			of_node_put(np);
			return ret;
		}

		i++;
	}

	return 0;
}

static int meson_card_parse_of_optional(struct snd_soc_card *card,
					const char *propname,
					int (*func)(struct snd_soc_card *c,
						    const char *p))
{
	/* If property is not provided, don't fail ... */
	if (!of_property_read_bool(card->dev->of_node, propname))
		return 0;

	/* ... but do fail if it is provided and the parsing fails */
	return func(card, propname);
}

static int meson_card_add_aux_devices(struct snd_soc_card *card)
{
	struct device_node *node = card->dev->of_node;
	struct snd_soc_aux_dev *aux;
	int num, i;

	num = of_count_phandle_with_args(node, "audio-aux-devs", NULL);
	if (num == -ENOENT) {
		return 0;
	} else if (num < 0) {
		dev_err(card->dev, "error getting auxiliary devices: %d\n",
			num);
		return num;
	}

	aux = devm_kcalloc(card->dev, num, sizeof(*aux), GFP_KERNEL);
	if (!aux)
		return -ENOMEM;
	card->aux_dev = aux;
	card->num_aux_devs = num;

	for_each_card_pre_auxs(card, i, aux) {
		aux->dlc.of_node =
			of_parse_phandle(node, "audio-aux-devs", i);
		if (!aux->dlc.of_node)
			return -EINVAL;
	}

	return 0;
}

static void meson_card_clean_references(struct meson_card *priv)
{
	struct snd_soc_card *card = &priv->card;
	struct snd_soc_dai_link *link;
	struct snd_soc_dai_link_component *codec;
	struct snd_soc_aux_dev *aux;
	int i, j;

	if (card->dai_link) {
		for_each_card_prelinks(card, i, link) {
			if (link->cpus)
				of_node_put(link->cpus->of_node);
			for_each_link_codecs(link, j, codec)
				of_node_put(codec->of_node);
		}
	}

	if (card->aux_dev) {
		for_each_card_pre_auxs(card, i, aux)
			of_node_put(aux->dlc.of_node);
	}

	kfree(card->dai_link);
	kfree(priv->link_data);
}

int meson_card_probe(struct platform_device *pdev)
{
	const struct meson_card_match_data *data;
	struct device *dev = &pdev->dev;
	struct meson_card *priv;
	int ret;

	data = of_device_get_match_data(dev);
	if (!data) {
		dev_err(dev, "failed to match device\n");
		return -ENODEV;
	}

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	platform_set_drvdata(pdev, priv);
	snd_soc_card_set_drvdata(&priv->card, priv);

	priv->card.owner = THIS_MODULE;
	priv->card.dev = dev;
	priv->match_data = data;

	ret = snd_soc_of_parse_card_name(&priv->card, "model");
	if (ret < 0)
		return ret;

	ret = meson_card_parse_of_optional(&priv->card, "audio-routing",
					   snd_soc_of_parse_audio_routing);
	if (ret) {
		dev_err(dev, "error while parsing routing\n");
		return ret;
	}

	ret = meson_card_parse_of_optional(&priv->card, "audio-widgets",
					   snd_soc_of_parse_audio_simple_widgets);
	if (ret) {
		dev_err(dev, "error while parsing widgets\n");
		return ret;
	}

	ret = meson_card_add_links(&priv->card);
	if (ret)
		goto out_err;

	ret = meson_card_add_aux_devices(&priv->card);
	if (ret)
		goto out_err;

	ret = devm_snd_soc_register_card(dev, &priv->card);
	if (ret)
		goto out_err;

	return 0;

out_err:
	meson_card_clean_references(priv);
	return ret;
}
EXPORT_SYMBOL_GPL(meson_card_probe);

int meson_card_remove(struct platform_device *pdev)
{
	struct meson_card *priv = platform_get_drvdata(pdev);

	meson_card_clean_references(priv);

	return 0;
}
EXPORT_SYMBOL_GPL(meson_card_remove);

MODULE_DESCRIPTION("Amlogic Sound Card Utils");
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
aa9c3b72 JB	1	// SPDX-License-Identifier: GPL-2.0
	2	//
	3	// Copyright (c) 2020 BayLibre, SAS.
	4	// Author: Jerome Brunet <jbrunet@baylibre.com>
	5
	6	#include <linux/module.h>
	7	#include <linux/of_platform.h>
	8	#include <sound/soc.h>
	9
	10	#include "meson-card.h"
	11
	12	int meson_card_i2s_set_sysclk(struct snd_pcm_substream *substream,
	13	struct snd_pcm_hw_params *params,
	14	unsigned int mclk_fs)
	15	{
	16	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	17	struct snd_soc_dai *codec_dai;
	18	unsigned int mclk;
	19	int ret, i;
	20
	21	if (!mclk_fs)
	22	return 0;
	23
	24	mclk = params_rate(params) * mclk_fs;
	25
b5c52f58	26	for_each_rtd_codec_dais(rtd, i, codec_dai) {
aa9c3b72 JB	27	ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
	28	SND_SOC_CLOCK_IN);
	29	if (ret && ret != -ENOTSUPP)
	30	return ret;
	31	}
	32
385a5c60	33	ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), 0, mclk,
aa9c3b72 JB	34	SND_SOC_CLOCK_OUT);
	35	if (ret && ret != -ENOTSUPP)
	36	return ret;
	37
	38	return 0;
	39	}
	40	EXPORT_SYMBOL_GPL(meson_card_i2s_set_sysclk);
	41
	42	int meson_card_reallocate_links(struct snd_soc_card *card,
	43	unsigned int num_links)
	44	{
	45	struct meson_card *priv = snd_soc_card_get_drvdata(card);
	46	struct snd_soc_dai_link *links;
	47	void **ldata;
	48
	49	links = krealloc(priv->card.dai_link,
	50	num_links * sizeof(*priv->card.dai_link),
	51	GFP_KERNEL \| __GFP_ZERO);
6e801dc4 CIK	52	if (!links)
	53	goto err_links;
	54
aa9c3b72 JB	55	ldata = krealloc(priv->link_data,
	56	num_links * sizeof(*priv->link_data),
	57	GFP_KERNEL \| __GFP_ZERO);
6e801dc4 CIK	58	if (!ldata)
6e801dc4 CIK	59	goto err_ldata;
aa9c3b72 JB	60
	61	priv->card.dai_link = links;
	62	priv->link_data = ldata;
	63	priv->card.num_links = num_links;
	64	return 0;
6e801dc4 CIK	65
	66	err_ldata:
	67	kfree(links);
	68	err_links:
	69	dev_err(priv->card.dev, "failed to allocate links\n");
	70	return -ENOMEM;
	71
aa9c3b72 JB	72	}
	73	EXPORT_SYMBOL_GPL(meson_card_reallocate_links);
	74
	75	int meson_card_parse_dai(struct snd_soc_card *card,
	76	struct device_node *node,
	77	struct device_node **dai_of_node,
	78	const char **dai_name)
	79	{
	80	struct of_phandle_args args;
	81	int ret;
	82
	83	if (!dai_name \|\| !dai_of_node \|\| !node)
	84	return -EINVAL;
	85
	86	ret = of_parse_phandle_with_args(node, "sound-dai",
	87	"#sound-dai-cells", 0, &args);
	88	if (ret) {
	89	if (ret != -EPROBE_DEFER)
	90	dev_err(card->dev, "can't parse dai %d\n", ret);
	91	return ret;
	92	}
	93	*dai_of_node = args.np;
	94
	95	return snd_soc_get_dai_name(&args, dai_name);
	96	}
	97	EXPORT_SYMBOL_GPL(meson_card_parse_dai);
	98
	99	static int meson_card_set_link_name(struct snd_soc_card *card,
	100	struct snd_soc_dai_link *link,
	101	struct device_node *node,
	102	const char *prefix)
	103	{
	104	char *name = devm_kasprintf(card->dev, GFP_KERNEL, "%s.%s",
	105	prefix, node->full_name);
	106	if (!name)
	107	return -ENOMEM;
	108
	109	link->name = name;
	110	link->stream_name = name;
	111
	112	return 0;
	113	}
	114
	115	unsigned int meson_card_parse_daifmt(struct device_node *node,
	116	struct device_node *cpu_node)
	117	{
	118	struct device_node *bitclkmaster = NULL;
	119	struct device_node *framemaster = NULL;
	120	unsigned int daifmt;
	121
	122	daifmt = snd_soc_of_parse_daifmt(node, DT_PREFIX,
	123	&bitclkmaster, &framemaster);
	124	daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
	125
	126	/* If no master is provided, default to cpu master */
	127	if (!bitclkmaster \|\| bitclkmaster == cpu_node) {
	128	daifmt \|= (!framemaster \|\| framemaster == cpu_node) ?
	129	SND_SOC_DAIFMT_CBS_CFS : SND_SOC_DAIFMT_CBS_CFM;
	130	} else {
	131	daifmt \|= (!framemaster \|\| framemaster == cpu_node) ?
	132	SND_SOC_DAIFMT_CBM_CFS : SND_SOC_DAIFMT_CBM_CFM;
	133	}
	134
	135	of_node_put(bitclkmaster);
136	of_node_put(framemaster);
137
138	return daifmt;
139	}
140	EXPORT_SYMBOL_GPL(meson_card_parse_daifmt);
141
142	int meson_card_set_be_link(struct snd_soc_card *card,
143	struct snd_soc_dai_link *link,
144	struct device_node *node)
145	{
146	struct snd_soc_dai_link_component *codec;
147	struct device_node *np;
148	int ret, num_codecs;
149
150	link->no_pcm = 1;
151	link->dpcm_playback = 1;
152	link->dpcm_capture = 1;
153
154	num_codecs = of_get_child_count(node);
155	if (!num_codecs) {
156	dev_err(card->dev, "be link %s has no codec\n",
157	node->full_name);
158	return -EINVAL;
159	}
160
161	codec = devm_kcalloc(card->dev, num_codecs, sizeof(*codec), GFP_KERNEL);
162	if (!codec)
163	return -ENOMEM;
164
165	link->codecs = codec;
166	link->num_codecs = num_codecs;
167
168	for_each_child_of_node(node, np) {
169	ret = meson_card_parse_dai(card, np, &codec->of_node,
170	&codec->dai_name);
171	if (ret) {
172	of_node_put(np);
173	return ret;
174	}
175
176	codec++;
177	}
178
179	ret = meson_card_set_link_name(card, link, node, "be");
180	if (ret)
181	dev_err(card->dev, "error setting %pOFn link name\n", np);
182
183	return ret;
184	}
185	EXPORT_SYMBOL_GPL(meson_card_set_be_link);
186
187	int meson_card_set_fe_link(struct snd_soc_card *card,
188	struct snd_soc_dai_link *link,
189	struct device_node *node,
190	bool is_playback)
191	{
192	struct snd_soc_dai_link_component *codec;
193
194	codec = devm_kzalloc(card->dev, sizeof(*codec), GFP_KERNEL);
195	if (!codec)
196	return -ENOMEM;
197
198	link->codecs = codec;
199	link->num_codecs = 1;
200
201	link->dynamic = 1;
202	link->dpcm_merged_format = 1;
203	link->dpcm_merged_chan = 1;
204	link->dpcm_merged_rate = 1;
205	link->codecs->dai_name = "snd-soc-dummy-dai";
206	link->codecs->name = "snd-soc-dummy";
207
208	if (is_playback)
209	link->dpcm_playback = 1;
210	else
211	link->dpcm_capture = 1;
212
213	return meson_card_set_link_name(card, link, node, "fe");
214	}
215	EXPORT_SYMBOL_GPL(meson_card_set_fe_link);
216
217	static int meson_card_add_links(struct snd_soc_card *card)
218	{
219	struct meson_card *priv = snd_soc_card_get_drvdata(card);
220	struct device_node *node = card->dev->of_node;
221	struct device_node *np;
222	int num, i, ret;
223
224	num = of_get_child_count(node);
225	if (!num) {
226	dev_err(card->dev, "card has no links\n");
227	return -EINVAL;
228	}
229
230	ret = meson_card_reallocate_links(card, num);
231	if (ret)
232	return ret;
233
234	i = 0;
235	for_each_child_of_node(node, np) {
236	ret = priv->match_data->add_link(card, np, &i);
237	if (ret) {
238	of_node_put(np);
239	return ret;
240	}
241
242	i++;
243	}
244
245	return 0;
246	}
247
248	static int meson_card_parse_of_optional(struct snd_soc_card *card,
249	const char *propname,
250	int (func)(struct snd_soc_card c,
251	const char *p))
252	{
253	/* If property is not provided, don't fail ... */
254	if (!of_property_read_bool(card->dev->of_node, propname))
255	return 0;
256
257	/* ... but do fail if it is provided and the parsing fails */
258	return func(card, propname);
259	}
260
261	static int meson_card_add_aux_devices(struct snd_soc_card *card)
262	{
263	struct device_node *node = card->dev->of_node;
264	struct snd_soc_aux_dev *aux;
265	int num, i;
266
267	num = of_count_phandle_with_args(node, "audio-aux-devs", NULL);
268	if (num == -ENOENT) {
269	return 0;
270	} else if (num < 0) {
271	dev_err(card->dev, "error getting auxiliary devices: %d\n",
272	num);
273	return num;
274	}
275
276	aux = devm_kcalloc(card->dev, num, sizeof(*aux), GFP_KERNEL);
277	if (!aux)
278	return -ENOMEM;
279	card->aux_dev = aux;
280	card->num_aux_devs = num;
281
282	for_each_card_pre_auxs(card, i, aux) {
283	aux->dlc.of_node =
284	of_parse_phandle(node, "audio-aux-devs", i);
285	if (!aux->dlc.of_node)
286	return -EINVAL;
287	}
288
289	return 0;
290	}
291
292	static void meson_card_clean_references(struct meson_card *priv)
293	{
294	struct snd_soc_card *card = &priv->card;
295	struct snd_soc_dai_link *link;
296	struct snd_soc_dai_link_component *codec;
297	struct snd_soc_aux_dev *aux;
298	int i, j;
299
300	if (card->dai_link) {
301	for_each_card_prelinks(card, i, link) {
302	if (link->cpus)
303	of_node_put(link->cpus->of_node);
304	for_each_link_codecs(link, j, codec)
305	of_node_put(codec->of_node);
306	}
307	}
308
309	if (card->aux_dev) {
310	for_each_card_pre_auxs(card, i, aux)
311	of_node_put(aux->dlc.of_node);
312	}
313
314	kfree(card->dai_link);
315	kfree(priv->link_data);
316	}
317
318	int meson_card_probe(struct platform_device *pdev)
319	{
320	const struct meson_card_match_data *data;
321	struct device *dev = &pdev->dev;
322	struct meson_card *priv;
323	int ret;
324
325	data = of_device_get_match_data(dev);
326	if (!data) {
327	dev_err(dev, "failed to match device\n");
328	return -ENODEV;
329	}
330
331	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
332	if (!priv)
333	return -ENOMEM;
334
335	platform_set_drvdata(pdev, priv);
336	snd_soc_card_set_drvdata(&priv->card, priv);
337
338	priv->card.owner = THIS_MODULE;
339	priv->card.dev = dev;
340	priv->match_data = data;
341
342	ret = snd_soc_of_parse_card_name(&priv->card, "model");
343	if (ret < 0)
344	return ret;
345
346	ret = meson_card_parse_of_optional(&priv->card, "audio-routing",
347	snd_soc_of_parse_audio_routing);
348	if (ret) {
349	dev_err(dev, "error while parsing routing\n");
350	return ret;
351	}
352
353	ret = meson_card_parse_of_optional(&priv->card, "audio-widgets",
354	snd_soc_of_parse_audio_simple_widgets);
355	if (ret) {
356	dev_err(dev, "error while parsing widgets\n");
357	return ret;
358	}
359
360	ret = meson_card_add_links(&priv->card);
361	if (ret)
362	goto out_err;
363
364	ret = meson_card_add_aux_devices(&priv->card);
365	if (ret)
366	goto out_err;
367
368	ret = devm_snd_soc_register_card(dev, &priv->card);
369	if (ret)
370	goto out_err;
371
372	return 0;
373
374	out_err:
375	meson_card_clean_references(priv);
376	return ret;
377	}
378	EXPORT_SYMBOL_GPL(meson_card_probe);
379
380	int meson_card_remove(struct platform_device *pdev)
381	{
382	struct meson_card *priv = platform_get_drvdata(pdev);
383
384	meson_card_clean_references(priv);
385
386	return 0;
387	}
388	EXPORT_SYMBOL_GPL(meson_card_remove);
389
390	MODULE_DESCRIPTION("Amlogic Sound Card Utils");
391	MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
392	MODULE_LICENSE("GPL v2");